Method of fighting surface microorganisms

Abstract

The invention relates to a method for fighting mold, algae, and other microorganisms on various wall, floor, or ceiling surfaces infested with said organisms, and on masonry in general. The method comprises the following steps carried out consecutively: applying a first solution to the infested surface, wherein the first solution contains at least one surfactant compound; applying at least once a second solution that was basified by means of caustic soda to the infested surface, wherein the solution contains at least one hypochlorite compound; applying a third solution to the infested surface, wherein the solution contains at least hydrogen peroxide and lactic acid as active substances, and wherein the application of the third solution is continued until the foam formation on the infested surface has ended; applying a fourth solution to the infested surface, wherein the solution contains at least one quaternary ammonium compound.

The invention claimed is: 
     
       1. A method of fighting mold, algae and other microorganisms on a porous surface of a wall, floor, ceiling or masonry, the method comprising the steps of sequentially:
 applying to the surface a first solution that contains sodium alkane sultanate with a concentration of 1-5%, alcohol ethoxylate with a concentration of 1-5%, butyldiglycol with a concentration of 5-15%, and pentapotassium triphosphate with a concentration of 1-5% to open pores of the porous surface, thereafter 
 applying to the surface to which the first solution was applied a second solution that has been made alkaline using sodium hydroxide and that contains sodium hypochlorite such that the second solution enters the pores of the surface opened by the first solution, thereafter 
 applying to the surface to which the second solution has been applied a third solution that contains hydrogen peroxide and lactic acid as active substances that react with the second solution in the open pores so as to generate foam and continuing application of the third solution until foaming on the surface has ended, and thereafter 
 applying to the surface to which the third solution has been applied a fourth solution that is aqueous and contains one quaternary ammonium compound to shrink or close the pores opened by the first solution. 
 
     
     
       2. The method according to  claim 1 , wherein the second solution is aqueous, the sodium hydroxide has a concentration of 5-15%, and the third solution further contains sodium hypochlorite with a concentration of 1-10%. 
     
     
       3. The method according to  claim 1 , wherein the third solution is aqueous, the hydrogen peroxide has a concentration of 1-5%, and the third solution further contains polyaminopropyl biguanide with a concentration of up to 1% and lactic acid with a concentration of 1-5%. 
     
     
       4. The method according to  claim 1 , wherein the fourth solution is aqueous and contains benzalkonium chloride at a concentration of 5-15% and ethylenediaminetetraacetate at a concentration of 1%. 
     
     
       5. The method according to  claim 1 , further comprising the step, subsequent to application of the fourth solution and when the surface is in an internal room, of:
 spraying the third solution as a mist into the air of the room. 
 
     
     
       6. The method according to  claim 1 , wherein each of the solutions is applied by spraying onto the surface.